Journal-bearing



i No. 280,347.

Patented July 3, 1883.

dat

INVENTOR,

.//rf ff BY Quim. ATTORNEY.

WIVTNESSES UNITED STATES PATENT OFFICE.

vFRANK R. CARGILL, OF CHICAGO, ILLINOIS.

JOURNAL-BEARING.

SPECIFICATION forming part o'f Letters Patent No. 280,347, dated July s,188e. Application sled April 17, lees. (No modeml ml'o LZZ vwhom, t mayconcern:

Be it known that I, FRANK It. CARGILL, of

' Chicago, coullty of Cook, and State of Illinois,

have illvented a new and useful Inlprovement in Journal-Bearings, ofwhich the following is a speciflcation, reference being had to theaccompanyillg drawings, illustrating the inlprovelnent, in which- FigureI is a perspective representation of a half bearing or shell elnbodyingnly improvement Fig. II, a transverse section thereof cutting thestrengthening-rib, Fig. III, eFlvcenItral sectional longitudinalelevatioll of The object of the present illvelltion .is to provide ashell journal bearing or box which shall be of suitable strellgth andretain the soft or anti-friction metal entirely within rims orprojections, and at the same time have the soft metal cover thestrellgthenillg-rib.

It has formerly been the custom to line journal-bearings with soft oranti-friction metal,

. alld also to run or cast the Inetal in a matrix made in a sinlple formill the shell traversed by strengtheningribs. Various forms are shownill the following patents: The patent to John Sweeney, No. 199,699,shows a box cast round a dovetail rib, with the anti-friction lnetalcast on the inside of the box and over the rib; but the soft lnetalconles flush' -with the ends ofthe box, and as a result ill practice thesoft metal will be swaged endwise, forming sharp edges, which will cutthe shoulders of the journals. The patent to B. J. Downs, No. 236,560,shows a box lnore llearly like the one sought to be patellted than anyof which I have knowledge, but the strengthelling-rib oomes'even withthe curved ribs at the ends of the box, and if only the nlatrices are tobe filled with soft metal the central rib will at all times come incontact with the jourllal. This is a serious objection in theconstruction of boxes, inaslnuch as there are two separations betweenthe hard and soft metal, very near the central main bearing-point of thejournal and longitudinally with its axis. The point of objection is, thesoft lnetal is swaged over the rib at any time the box gets hot, unlessthe bearing is on the rib, in which case the soft metal is of but littleuse. I obviate these objections by means of abox whose matrix is abouttwice the depth at the edges of the rib as at the lnargins of thebox,and employing a rib which projects up from the matrix about one-halfof the celltral'depth of the matrix, and then solder the anti-frictionmetal to the matrix and to the rib, and bringing the said lnetal flushwith ,the curved ribs at-the ends ofthe shell-box. By this means theholes sh own through the shell ill Patent No. 236, 560 are obviated, andthe liability of breakage therefrom removed; and at thesalne time I havea ribbed lllatrix filled with a single sheet of llletal blltting againstflanges, both at the ends alld sides of the box. It is this specialcollstruotioll which I clailll to have invented, alld ask thereforapatent. It is observed that these boxes are designed to be used for thebetter class of lnacllinery, and, being ill shell fornl alld light, theyare nlade of strong, tough metal, good cast-brass being suitable.

A represents the sllell of olle-half of a box, which is formed with twomatrices, A, side flanges, D D, end flanges, BB, and astrengthellillg-rib, S, extending from flange B to B, but is only aboutolle-half so thick as the depth of the matrix at the edges of the rib S.This i shell has soft or anti-friction Inet-al soldered ill theshell-cavityto fill the same flusll with the face of -the flanges B,coverillg the rib S, as sllown at Fig. II, by a single sheet of m tal.

rIhe especial purpose of inclosing all the box Illetal proper within theshell is that such used by the applicant is very soft, much lnore sothan the ordinary Babbitt llletal, alld unless the soft metal be wllolly illclosed with ribs at the central faces the action of the journalwill draw it ollt ill thin-cut sheets, which, by the action of theoiler, are returned, and cut the box. Ill this respect Illy box differsfrom the journal bearing patented to De XV. C. Clough on June 23, 1874,inasmuch as in his the soft llletal conles in fllll-widtll sheet to theIOO The depth of the matrix at the anges D is the anges B, and thecavity of the shell lled ro shown at E. with soft anti-friction metal C,soldered in to I claim as neW- Colne flush with the flanges D B, coverthe rib A journal shell-box constructed with two S, and be nelosedWholly between the Hang-es, 5rn1atriees, A, deeper at the edges of theee11 as speeied, and for the purpose set forth.

tral rib than at the anges D, and inolosed by FRANK R. CARGILL. side andend anges, D B, and provided with Witnesses a strengthening-rib, S,lying in the center of ADoLF HEILL, the shell between the matrices A andbelow G. L. CHAPIN.

